ASTM A182 GRADE F316/F316L Stainless Steel Blind Flanges
Jan 13, 2026
Leave a message
what is ASTM A182 GRADE F316/F316L Stainless Steel Blind Flanges?
ASTM A182 Grade F316/F316L Stainless Steel Blind Flanges are forged fittings from molybdenum-containing austenitic stainless steel, offering superior corrosion resistance (especially in chloride environments) for closing pipe ends, available in various pressure classes (150-2500) and sizes (1/2"-64"), used in high-temp/corrosive industries like petrochemicals, with F316L's low carbon content ideal for welding.
What is the ASME B16.48 standard?
ASME B16.48 is an internationally recognized standard for the design and dimensions of pipe blind flanges, ensuring that the blind flange dimensions perfectly match the flange and operate safely at the rated pressure class (CL150). It facilitates international engineering projects and export applications, and for 2-inch CL150 piping systems, this standard is a mandatory requirement for most EPC projects and end-users.
Stainless Steel Spectacle Blind Specification Table
| Item | Specification |
|---|---|
| Product Name | Stainless Steel Spectacle Blind |
| Material | Stainless Steel |
| Material Grade | ASTM A182 Grade F316 / F316L |
| Design Standard | ASME B16.48 |
| Pressure Class | Class 150 |
| Nominal Size | 2 Inch |
| Type | Spectacle Blind (Figure-8, Rotatable Type) |
| Flange Facing | Raised Face (RF) |
| Reference No. | 534142 |
| Material Test Certificate | EN 10204:2004 Type 3.1 |
| Certification | EAC Certificate (Compliant with CU TR 032/2013) |
ASME SA182 F316/F316L Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
SS 316 |
1.4401 / 1.4436 | S31600 | SUS 316 | 316S31 / 316S33 | – | Z7CND17‐11‐02 | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 |
| SS 316L | 1.4404 / 1.4435 | S31603 | SUS 316L | 316S11 / 316S13 | 03Ch17N14M3 / 03Ch17N14M2 | Z3CND17‐11‐02 / Z3CND18‐14‐03 | X2CrNiMo17-12-2 / X2CrNiMo18-14-3 |
| SS 316H | 1.4401 | S31609 | |||||
| SS 316Ti | 1.4571 | S31635 | SUS 316Ti | 320S31 | 08Ch17N13M2T | Z6CNDT17‐123 | X6CrNiMoTi17-12-2 |
ASME SA182 F316H Flange Chemical Composition
| Grade | Cr | Mo | C | Mn | Si | P | S | Ni | N |
| SS 316 | 16.00 – 18.00 | 2.00 – 3.00 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 11.00 – 14.00 | 67.845 min |
| SS 316L | 16.00 – 18.00 | 2.00 – 3.00 | 0.035 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 10.00 – 14.00 | 68.89 min |
| SS 316H | 16.00 – 18.00 | 2.00 – 3.00 | 0.10 max | 2.0 max | 0.75 max | 0.045 max | 0.030 max | 10.00 – 14.00 | 68.89 min |
| SS 316Ti | 16.00 – 18.00 | 2.00 – 3.00 | 0.08 max | 2.0 max | 0.75 max | 0.045 max | 0.030 max | 10.00 – 14.00 | 68.395 min |
ASTM A182 SS 316 Flanges Mechanical Properties
| Grade | Tensile Strength | Melting Point | Yield Strength (0.2%Offset) | Density | Elongation |
| SS 316 | Psi – 75000 , MPa – 515 | 1400 °C (2550 °F) | Psi – 30000 , MPa – 205 | 8.0 g/cm3 | 35 % |
| SS 316L | Psi – 75000 , MPa – 515 | 1399 °C (2550 °F) | Psi – 30000 , MPa – 205 | 8.0 g/cm3 | 35 % |
| SS 316H | Psi – 75000 , MPa – 515 | 1400 °C (2550 °F) | Psi – 30000 , MPa – 205 | 8.0 g/cm3 | 35 % |
| SS 316Ti | Psi – 75000 , MPa – 515 | 1399 °C (2550 °F) | Psi – 30000 , MPa – 205 | 8.0 g/cm3 | 35 % |
ASTM A182 F316 Stainless Steel Flanges
| Stainless Steel 316/316L Flanges Type | Size | |
| ASTM A182 F316 Slip-On Flanges | ASTM A182 F316Ti Threaded Flanges | Sizes 1/8″ – 36″ Raised Face or Flat Face |
| ASTM A182 F316L Weld Neck Flanges | ASTM A182 F316L Socket Weld Flanges | |
| ASTM A182 F316H Blind Flanges | ASTM A182 F316H Reducing Flanges | |
| ASTM A182 F316Ti Lap Joint Flanges | ASTM A182 F316 Plate Flanges | |
| ASTM A182 F316 Orifice Flanges | ASTM A182 F316L Forged Flanges | |
| ASTM A182 F316Ti Ring Type Joint Flanges | ASTM A182 F316H Square Flanges | |
FAQ
Q1: What is the difference between a reversible blind flange and a standard blind flange?
Reversible blind flanges allow for switching between open and closed positions by rotation and provide a visual indication of the pipe status, making them safer and easier to maintain than single-piece blind flanges.
Q2: How should I choose between ASTM A182 F316 and F316L?
If the system involves welding or high corrosion risk, F316L should be prioritized; F316 is perfectly suitable for normal operating conditions.
Q3: What pressure is a CL150 blind flange suitable for?
CL150 is suitable for medium and low-pressure piping systems. The specific allowable pressure depends on the operating temperature and should be referenced from the ASME pressure-temperature rating table.
Send Inquiry